Research shows that ultraviolet rays, especially those from reflected light, can cause sunburn damage to the cornea. the cornea is part of the eye.

what is the best way to combine the information in the two sentences?

Read the sentence. marissa heard the class bell ringing loudly walking down the hall. what is the best way to revise this sentence? `marissa heard the hall ringing loudly walking down by the class bell. `marissa heard the class bell walking down the hall ringing loudly. `walking down the hall, marissa heard the class bell ringing loudly. `walking down the hall, the class bell ringing loudly marissa heard.